/Engine/Plugins/2D/Paper2D/Source/Paper2D/Classes/PaperGroupedSpriteComponent.h
Get the transform for the instance specified. Instance is returned in local space of this component unless bWorldSpace is set. Returns True on success.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Components|Sprite") bool GetInstanceTransform ( int32 InstanceIndex, FTransform & OutInstanceTransform, bool bWorldSpace ) const